Front Page23 Jul 2010 10:06 am
Electronics: Great hobby, or greatest hobby?
Like many kids of my generation with a geeky slant, I gravitated towards electronics. I’d take apart whatever junk I could get a hold of, and with my next door neighbor being a ham radio operator with lots of junk to get rid of, that was plenty. VCRs, televisions, radios.. They all fell to my screwdriver and soldering iron. Soon I’d amassed a huge collection of components.
My understanding of what I was doing– what all those parts meant. What you could DO with them– was limited, though. I never tried to make anything with them; I just collected.
All my electronics education at the time revolved around the 555 timer. It’s a fine chip, but it’s just a timer, an oscillator. Since that was the only “active” component I’d ever been exposed to, I looked at all problems through that lens, and eventually shrugged my shoulders and followed the path of software.
15 years later, I decided to try picking it up again. I had a project in mind: Making the stars in a painting I had fade in and out. I decided to make a concerted effort to pick up electronics again. What did I do? I picked up “The Art of Electronics” and a 555 timer again. Ugh. Art of Electronics is not for beginners. It’s a text book and it reads like one. Once again, I got frustrated and set down the iron.
7 years later, and I come across “Intro to the Arrr-duino”, a short video from MAKE Blog. It explains that making that light blink is just a simple matter of loading a microcontroller with a short bit of C code! C! I know this! Suddenly, all that pent-up 9 year old enthusiasm for electronics jumps into gear again, as though I never left it. I got the Arduino, I got some parts. I tore through the Arduino Playground, harvested any random piece of hardware from the trash bins at work and tried to figure out how to interface it. Motors! Memory chips! LCDs! Rotary encoders! So much learning. So much fun.
I guess what this blog entry is, is a big thank you to the Arduino team. By making a toolkit that makes electronics accessible with a minimal investment in time and money, they’ve jumpstarted a generation of makers, me included.
Front Page23 Dec 2009 04:08 pm
Front Page09 Dec 2009 04:10 pm
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A search engine for eagle cad parts
Front Page19 Aug 2009 04:08 pm
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..An FPGA accelerator for doing bioinformatics research.
Front Page27 Mar 2009 04:06 pm
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The MakerBot CupCake 3D Printer. $750, and comes with five pounds of plastic. Yow.
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Cheap, autonomous flying aircraft. Nifty!
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Capacitance sensing, the brute force method.
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A simple variable voltage power supply.
Front Page27 Mar 2009 01:16 pm
Gangster Gadget makes awesome and reasonably priced protoboards to assist in making electronic projects. They’re through-hole plated, high quality boards, and fun to hack on.
They’ve just released a new board they call their Boss Board. It has spots for a PS2 connector, Audio/Video jacks, and even an NES controller (where do you get the connectors??).
The more I get into etching my own PCBs, the more I see the value in pushing out a project quickly with a protoboard. It doesn’t look as nice, but it’s just a LOT easier.
Front Page25 Mar 2009 09:59 pm
Avery 8317 Embossed Note Cards Template
In producing our wedding thank you letters, I found I needed a template for Avery’s “Embossed Note Cards.” I couldn’t find any online, so I made my own.
8317 Embossed Note Card Template for Photoshop (PSD)
Front Page24 Mar 2009 05:48 pm
I couldn’t have asked for a more perfect wedding, to a more perfect girl.
Front Page&Projects24 Mar 2009 05:25 pm
Here’s how to grab a single frame from a live video stream using GStreamer on Linux in Ruby.
The trick is to use the “last_buffer” property on your video sink. That contains the last frame that was displayed to your screen.
You can use RMagick to convert that into something you can use like this:
#!/usr/bin/ruby
require 'gst'
require 'RMagick'
@pipe = Gst::Pipeline.new
@source = Gst::ElementFactory.make("v4l2src")
@sink = Gst::ElementFactory.make("xvimagesink")
@pipe.add(@source,@sink)
@source >> @sink
@pipe.play
[ ... Later ... ]
# This is the actual capture.
capture = Image.from_blob(@sink.last_buffer.data).first
Front Page17 Feb 2009 04:11 pm
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The chemistry basics of biology
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Basic Cloning and Biobrick Assembly Tutorial.
Front Page13 Feb 2009 04:05 pm
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Confetti made of the same stuff as cornstarch packing peanuts.
Front Page06 Feb 2009 04:06 pm
